Alexander patterson



(No Model.)

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WITNESSES (No Model.) 2 Sheets-Sheet 2, A. PATERSON.

ROLL BEARING.

Patented June '28, 1892.

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UNITED v-SfrATEs ATE-NT Ormes.

ALEXANDER k.'iAlTnRsoN, or ALLEGHENY, PENNSYLVANIA.

ROLL-BEARING.

SPECIFICATION forming-part of Letters. Patent No. 477,818, dated June28, 1892.

Application filed August 18, 1891.

To all whom it may concern.-

Be it known that I, ALEXANDER PATERsoN, of Allegheny, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Roll-Bearings, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming part of this specification, in which- Figure l is across-section through the roll, showing the roll-bearings. Fig. 2 is acrosssection on the line II II of Fig. 1 Fig. 3 is a view similar toFig. 1, showing a modified form of the helix. Fig. 4 is a plan of theupper block 7, provided with a single helix. Fig. 5 is a' similar viewshowing a double helix. Figs. 6 and 7 are views similar to Figs. 4 and5, but shown in perspective.

My invention relates to that class of rollbearings in which the upperroll is arranged for vertical adjustment, in order to reduce graduallythe thickness of the plate or bar acted upon; and it consists in animproved means by which the roll is adjusted, whereby springing of theroll is effectually prevented and a much more delicate adjustment isobtainable than by the use offormer means employed for this purpose.

In the drawings, in which similar numerals indicate corresponding parts,2 are 4the rollhousings, and 3 is the upper of a pair of rolls heldtherein.

3 are the brasses orbearings for the roll, the upper brass being held inthe sliding bearing-block 4, which works in the guideways 5. Upon theupper surface of the block 5 is secured the steel face 6, against whichan adjusting-screw bears in the ordinary construction. In my improvedconstruction a second block 7 is provided, having upon its lower surfacea piece 3, corresponding to the steel face 6. This block 7 is supportedupon springs 9, which extend from either end and 'bear attheirextremities upon bars l0, extending from the housings. This secondblock likewise slides in the guideways 5, and upon its upper surface isfastened a ring 11, which may be cast integral therewith, having ahelical or screwshaped upper edge. This helix maybe in the form of asingle curve, as shown in Figs. 3 and 6, or in the form of two curvesSerial No. 403,009. (No model.)

with a break betweemas shown in Figs. 1 and 2, and engaging therewith isanother corresponding helix or screw-thread upon a second ring 12,resting upon the ring l1. These rings are held in central position bysuitable lugs 13 upon the housings, and a shaft 14 passes centrallythrough them, being stepped at 15 in the block 7. This shaftis providedwith feathers whiclrfit in slots in the upper ring at 16, and at itsupper end is squared in crosssection for the application of a wrench orsimilar device for turning the shaft. The upper ring may preferably havea cover 17, provided with a boss 18, which works in a circu lar recessin the housing and holds the ring securely in place.

The action is as follows: As the plate or bar is inserted within therolls, the upper roll rises a certain distance to admit the same. Beforethe next pass, the shaft being turned a certain amount,the upper ringmoves over the lower ring and forces it down, so that the distancethrough which the roll may rise is thereby diminished. This operation isrepeated till ,the rolling is completed.

The advantages of my invention accrue from the rm broad bearing obtainedby the l having a broad firm bearing upon the face of the brass orbearing-block.

What I claim isd` 1. Aroll-bearin g comprising a movable bearing-blockhaving a flat upper bearing-surface, a second movable block having amating bearing-surface engaging therewith, a helical sur.

face upon the second block, and a revoluble adjusting-piece having ahelical surface enn gaging the same, substantially as and for thepurposes described.

IOO

provided Withr'a mating helical surface, a shfutb' passing; yt'l'irough-an`d keyedf to the ring and stepped in the second bearing-block, and I5means for turning said shaft, substantially as and for the purposesdescribed.

In testimony whereof I have hereunto set ALEXANDER PATERSON.

Witnesses:

H. M. CORWIN, W. B. CORWIN.

